Just to add some additional information to this issue:

Yes, the crackling increases with volume
The crackling increases in volume over time
Yes, the crackling is still evident in Stereo
Yes, the crackling is still evident on Direct, although on Master DSP only.
Cards haven’t been relocated in position for years
Was working fine prior to relocation for several days with identical equipment in proximity and position
Crackling almost sounds like interference similar to high tension interference in a car stereo
Connected an active speaker to analog out 1 and it works fine, no crackling

Linear Power Supply
C00 - Meridian Comms RS232 - Computer
Blank
S-Lead Patch
OE12 - Digital outputs to DSP Speakers
IE42 - Digital Inputs / Outputs
OA02 - Analog Outputs
Blank
IA00 - Analog Inputs
Blank x 2

No Tape Card

From my perspective this still suggests the OE12 is likely the issue?

Jon

Last edited by Jon; 2017-10-21 22:57.
Jon
861v4 LPS, 24/96: 4 x DSP6K, DSP5KC, 2xDSP33